Zou Shiming claimed China's first Olympic boxing medal by beating Armenia's Aleksan Nalbandyan 20-12 in the light flyweight quarter-finals. Zou now faces Yan Bhartelemy Varela in Friday's semi-finals, the Cuban having outscored South Korea's Hong Moo Won.
Russia's Sergey Kazakov beat Namibia's Joseph Jermi 18-11 and fights Turkey's Atagun Yalcinkaya in the last four.
Zou defeated Bhartelemy Varela at last year's world championships in Bangkok and went on to win a silver medal.
Yalcinkaya outpointed Italy's Alfonso Pinto 33-24.
MMIX
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